|
|
|
|
|
|
|
|
|
|
|
Your Price: $ 12.97
Item Number: PAT1005FF1E |
|
|
|
|
|
| We also accept Checks and Money Orders. |
|
|
|
|
|
|
|
|
|
|
|
|
1940s Patent document [Matted for framing] for design of a Secret Communication System by Hedy K. Markey Et Al. [aka Hedy Lamarr]. The story is far below...
This wonderful reproduction of the original patent graphic is crisply printed on luxurious Ivory Parchment Paper. It includes a white acid-free matte and is ready for insertion into a standard 8" x 10" frame for hanging. Graphic area shown is 4 1/2" x 6 1/2". Also, included are the remaining pages of the Patent Document printed on 20# white bond paper to complete the Patent information for the collector.
Image included here is low-quality for quick loading on the net with SAMPLE written across, which will not be on your print.
Makes a terrific gift for the collector or an addition to your collection!
All Patent Information has been reproduced from the USPTO documents.
============================================ Story of the patent from the net:
Hedy Lamarr, Inventor of Radio Controlled Torpedo
Born in Austria as Hedwig Eva Maria Kiesler, Hedy Lamarr was an A list actress in the 1930s and 40s, and was billed as the most beautiful woman in the world.
She and a co-inventor also conceived of a way to control torpedoes by a constantly changing radio frequency so that it could not be jammed. The shortcoming of radio controlled torpedoes was that the control signal could be jammed on any particular frequency. Ms. Lamarr and her partner thought of the way to get around a jamming signal, by having the controller and the receiver in the torpedo change frequency in unison and continually, so the signal could not be jammed. The controller and the receiver on the torpedo would change frequency at predetermined times, to predetermined frequencies so that a jamming signal could not follow the sequence. The exact configuration of coordinating the frequency changes that Lamarr came up with was not used, but the idea of frequency changing is used in many technologies today.
Ms. Lamarr, with the help of composer George Antheil invented a secret communication system in an effort to help the allies defeat the Germans in World War II. The invention, patented in 1941, manipulated radio frequencies between transmission and reception to develop an unbreakable code so that top-secret messages could not be intercepted. The technology called spread spectrum, now takes on many forms. However, all the spread spectrum that we use today directly or indirectly, flows from the invention created by Hedy Lamarr. ============================================ Keywords: celebrity memorabilia collectible collectibles collectable collectables movie heddy heady WWII patents patent print prints |
|
You might also like:
|
|
|